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Big Data on Azure
David GiardMicrosoft Technical [email protected]@davidgiard
Cloud ComputingHost some or all of your data or application on a third-party serverin a highly-scalable, highly-reliable way
Advantages of Cloud Computing• Lower capital costs• Flexible operating cost (Rent vs Buy)• Platform as a Service• Freedom from infrastructure / hardware• Redundancy• Automatic monitoring and failover
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Lost Opportunity
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Cost Factors• Service• VM Size• # VMs• Time
Exercise• Activate Azure Account• tinyurl.com/studentazurepass
HD Insight
Azure HDInsight• Microsoft Azure’s big-data solution using Hadoop• Open-source framework for storing and analyzing massive amounts of data
on clusters built from commodity hardware• Uses Hadoop Distributed File System (HDFS) for storage
• Employs the open-source Hortonworks Data Platform implementation of Hadoop• Includes Hive, Pig, Storm, Spark, and more
• Integrates with popular BI tools • Includes Power BI, Excel, SSAS, SSRS, Tableau
Apache Hadoop on Azure• Automatic cluster provisioning and configuration• Bypass an otherwise manual-intensive process
• Cluster scaling• Change number of nodes without deleting/re-creating the cluster
• High availability/reliability• Managed solution - 99.9% SLA• HDInsight includes a secondary head node
• Reliable and economical storage• HDFS mapped over Azure Blob Storage• Accessed through “wasb://” protocol prefix
Clusters
HDInsight Cluster Types• Hadoop: Query workloads• Reliable data storage, simple MapReduce
• HBase: NoSQL workloads• Distributed database offering random access to large amounts of
data• Apache Storm: Stream workloads• Real-time analysis of moving data streams
• Apache Spark: High-performance workloads• In-memory parallel processing
Cluster Creation
Exercise• Create HDInsight Spark Cluster• tinyurl.com/studentazurelabs
• (Note: Some screenshots may have changed)
Storm• Apache Storm is a distributed, fault-tolerant, open-source computation system
that allows you to process data in real-time with Hadoop.• Apache Storm on HDInsight allows you to create distributed, real-time
analytics solutions in the Azure environment by using Apache Hadoop.• Storm solutions can also provide guaranteed processing of data, with the
ability to replay data that was not successfully processed the first time.• Ability to write Storm components in C#, JAVA and Python.• Azure Scale up or Scale down without an impact for running Storm topologies.• Ease of provision and use in Azure portal.• Visual Studio project templates for Storm apps
Storm• Apache Storm apps are submitted as Topologies.• A topology is a graph of computation that processes streams• Stream: An unbound collection of tuples. Streams are produced by spouts
and bolts, and they are consumed by bolts.• Tuple: A named list of dynamically typed values.• Spout: Consumes data from a data source and emits one or more streams.• Bolt: Consumes streams, performs processing on tuples, and may emit
streams. Bolts are also responsible for writing data to external storage, such as a queue, HDInsight, HBase, a blob, or other data store.• Nimbus: JobTracker in Hadoop that distribute jobs, monitoring failures.
Apache Storm Topology
Event SourceSpout
Bolt Bolt Bolt
Tuple(“timestamp:: 1234567890,“measurement”: “123”,“location”: “ABC123”)
Tuple{…}
Tuple{…}
Tuple{…}
@DavidGiard
HBase• Apache HBase is an open-source, NoSQL database that is built on Hadoop and
modeled after Google BigTable.
• HBase provides random access and strong consistency for large amounts of unstructured and semistructured data in a schemaless database organized by column families
• Data is stored in the rows of a table, and data within a row is grouped by column family. • The open-source code scales linearly to handle petabytes of data on thousands of
nodes. It can rely on data redundancy, batch processing, and other features that are provided by distributed applications in the Hadoop ecosystem.
HBase• HBase Commands:
• create Equivalent to create table in T-SQL• get Equivalent to select statements in T-SQL• put Equivalent to update, Insert statement in T-SQL• scan Equivalent to select (no where condition) in T-SQL • delete/deleteall Equivalent to delete in T-SQL
• HBase shell is your query tool to execute in CRUD commands to a HBase cluster.• Data can also be managed using the HBase C# API, which provides a client library on
top of the HBase REST API. • An HBase database can also be queried by using Hive.
@DavidGiard
Hive• Apache Hive is a data warehouse system for Hadoop, which enables data
summarization, querying, and analysis of data by using HiveQL (a query language similar to SQL).
• Hive understands how to work with structured and semi-structured data, such as text files where the fields are delimited by specific characters.• Hive also supports custom serializer/deserializers for complex or irregularly
structured data. • Hive can also be extended through user-defined functions (UDF).• A UDF allows you to implement functionality or logic that isn't easily modeled in
HiveQL.
@DavidGiard
Apache Spark• Interactive manipulation and visualization of data
• Scala, Python, and R Interactive Shells• Jupyter Notebook with PySpark (Python) and Spark (Scala) kernels provide in-
browser interaction
• Unified platform for processing multiple workloads• Real-time processing, Machine Learning, Stream Analytics, Interactive Querying,
Graphing
• Leverages in-memory processing for really big data• Resilient distributed datasets (RDDs)• APIs for processing large datasets• Up to 100x faster than Hadoop
Spark Components on HDInsight• Spark Core• Includes Spark SQL, Spark Streaming,
GraphX, and MLlib
• Anaconda• Livy• Jupyter Notebooks• ODBC Driver for connecting from BI tools
(Power BI, Tableau)
Jupyter Notebooks on HDInsight• Browser-based interface for working with text, code, equations, plots,
graphics, and interactive controls in a single document.• Include preset Spark and Hive contexts (sc and sqlContext)
Items of Note About HDInsight• There is no “suspend” on HDInsight clusters• Provision the cluster, do work, then delete the cluster to avoid unnecessary
charges• Storage can be decoupled from the cluster and reused across deployments
• Can deploy from the portal, but often scripted in practice• Easier/repeatable creation and deletion
Exercise• Complete labs• tinyurl.com/studentazurelabs
@DavidGiard
Thank you!